I am also engaged in the catering industry. Our latest VIP card is a radio frequency card. It is a kind of card with built-in chip similar to IC card. Can complete credit card integral, stored value, discount and other functions. VIP information is stored in the card and can be read by special card swiping equipment. In fact, the function of VIP card is linked to the management scope of your catering management software. I hope I can help you.